ground tobacco that is chewed or inhaled through the nose Snuff-induced malignancy of nasal vestibule: a case report What is Snuff? – Bull
Description
Success rates for the existing smoking cessation practices hover in the 8-15% range at one year, [ii]and upwards of 70% of people who enter treatment programs use tobacco

It is also very ethically challenging to conduct long-term studies on the subject matter
J Endocr Soc 3, 19071916

Interventions for preoperative smoking cessation

[PubMed] [Google Scholar] R Core Team

(See what a pack of cigarettes costs in 2015 here
